Wednesday, December 13, 2017

Setting up VPN from FortiGate 80D to Cyberoam Cr25 with Dynamic IP on Cyberoam Side

Hello all, need advice on setting this up: I have to set up a VPN tunnel between 2 sites. Site A (HQ) has FortiGate 80D and Static WAN IP, Site B (Branch) has Cyberoam Cr25 with Dynamic WAN IP.

It is planned to acquire for the Branch a static IP from the ISP with a dedicated leased line reserved for VPN later, but in the mean time the HQ requires VPN access to the Branch.

I have been looking online into solutions and found Dynamic DNS as a possible workaroud: subscribe to the service on Cr25 side, and use the ddns address as a "Peer ID" when setting up Vpn onf the fortigate.

Apart from that, what I would be doing is set up the vpn normally with WAN IPs and manually update the IP addresses on each side whenever it changes, which is simply not sustainable...

Any feedback or advice on this setup is welcome.



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